Calculating-machine.



J. G. WAHL.

CALCULATING MACHINE. APPLICATION rum) 1110.17, 1911.

Patented May 20, 1913.

g x V J z -thc master dog UNITED sTArEs JOHN C. WAHL, OF CHICAGO, ILLINOIS, ASSIGNOR,

PATENT OFFICE.

BY MESNE ASSIGNMENTS, TO

ADDING MACHINE COMPANY, OF WILMINGTON, DELAWARE, A CORPORATIQII OE DELAWARE;

CALCULATING-MACHINE.

The invention is illustrated by the draw- Figure 1 represents a sectional plan, and Fig. 2 a sectional elevation of the totalizer.

As described in the above cited patent, the totalizer forms part of, a calculating attachment to a typewriter. It is driven by means of the numeral keys of the typewriter, upon wvhose operation the master mechanism of the attaclnnent operates and drives the master wheel and master dog. The master wheel rotates the carrying wheels of'the totalizer se'ria-tim, while the master dog disconnects the carrying wheel just being operated on from the carrying wheels to the thereof.

My invention is an improved method for disconnecting the carrying wheel operated on by the master wheel from t-he'carrying wheels to the right.

In the drawings, 1, represents the master wheel and 2 the master dog, operated as mentioned above, and fully described in the above cite-d patent. v

3 represents the carrying wheel, which carrying wheel is geared to the idle wheel 4 and drives the figure wheel 5.

6 and 7 re n-(sent arms which are mount ed upon the shaft 8. These arms have their lower ext-rcn'iities 9 formed to cooperate with 2. which when operated moves its upper end forward (to the left as viewed in Fig. 2) and thereby rotates the arm which is opposite to it. The arm 0 has formed atits upper extremity a spur ear segment 16. and arm 7 an annular gear segment 17. Meshing with segment 16 is a gear 19, and with segment 17 is another gear 1!). formed with eccentrics 20, respectively, these eccentrics being mounted upon the shafts 21--21. It will thus be seen that the motion of the master do 3 indirectly causes the rotationof the eccentrics 20 about the shafts. M o wedon each eccentric is a car- Specification of Letters Patent.-

Application filed August 17, 1911.

and State of ri glit- T'hesc gears 19 are each integrally Patented May 20, 1913.

Serial No. 644,575.

ried pinion 22 which is adapted to be used asa connection between one carrying wheel 3 and the' next'carrying wheel. It is evi dent that the carried pinion serves as a connection only when the eccentric brings it inits approached posit-ion toward the car rying gear 3, and that such conniact-io-nis broken when the eccentric is rotated about its shaft to bring the carried pinion into its receded position away from the carrying ear.

Of course, will be understood that there is an eccentric and connected gear and cooperating carried pinion for each carrying gear, and that all the mechanism is suitably supported in the framework of the totalizer. It will be further understood that there is present mechanism which prevents the carried pinions from being displaced from .their proper locations 'when in their receded positions, but as this mechanism is not part otmy invention, it will not be any further described; I

Having thus described my-invention, I claim:

-1. In a calculating-machine totalizer, a series of carrying gears, a series of carried pinions, each carried pinion serving as a connection between a carrying gear and the next higher carrying gear of the series, a series of eccentrics upon which said carried pinions are mounted, and means for rotating the eccentrics.

2. In a calculating-macl'iine totalizer, aseries of carrying gears, 21 series of carried pinions, each carried pinion serving as a connection between a carrying gear an the next higher carrying gear of the series, a series of eccentrics upon which said car-. ried pinions are mounted, and a series of gear sectors for operating said eccentrics.

3. In a calculating-machine totalizer, a series of carrying wheels, a series of carried pinions, each of the carried pinions serving as a connection between a carrying wheel and the, next higher carrying wheel of the series, a series of eccentrics supporting the carried pinions, said eccentrics being distributed into two groups, a series of arms for operating said eccentrics,- said arms being likewise distributed in two groups, each arm 0t one group beingfurnished with a. spur gear sector while each arm of the other. group is furnished with an annular gear sector, and a series of gears forniedingear --of the tegrally with the eccentrics and meshing with the gears formed upon the arms, for the purpose described.

4. In a calculating-machine totalizer, a series of carrying gears, a series of carried pinions, each of said carried pinions being adapted to serve as a connection between a carrying gear and the next higher carrying series, a series of eccentrics upon which the carried pinions are mounted and by means of which they are approached to and receded from the carrying gears, said series of eccentrics being disto thereby gain tributed in two groups,

the strengthening more room and to allow of the parts.

5. In a calculating-machine totalizer, a series of carryinggears, a series of carried pinions, each of the carried pinions serving as a connection between a carrying gear and the next higher carrying gear of the series, a series of eccentrics mounted upon two shafts and spaced alternately upon said shafts, a series of gears rigidly attached to said eccentrics, the carried pinions being mounted upon the eccentrics, a means for rotating the eccentrics upon the shaft to thereby bring-the carried pinions into mesh with their cooperating carrying gears and to withdraw the carried pinions away from their cooperatin carrying'gears, for the purpose describes In witness whereof, I have hereunto subscribed my name in the presence of two witnesses.

JOHN C. VVAHL. Witnesses ALFRED M. RYCKOFF, DAVID GOLDBERG. 

